Gpu1 is only showing 4.2MHASH so your card is trottleing. To find the reason you can use gpu-z and check the pcap reason.
1. Latest driver
2. Run the ETHlargement (the pill) in the backround.
3. Find the best tdp (power limit) for your cards. did you try 90% tdp?
You have confirmed that the sp-mod does 7MHASH with 65% tdp and ccminer 2.3 does 5.7MHASH on the same card and settings. This is a 22% improvement.
My asus 1080ti is getting 7300khash with +120core,-500mem, 65% power limit, 80 temp limit. 1 card and not 12 in the rig.